Safety-envelop.



W. SCHLEIER.

SAFETY ENVELOP.

APPLICATION FILED MAR. 20, 1911.

Patented Feb. 11, 1913.

Show;

CHARLES W. SCHLEIER, OF WELLS TON, MISSOURI.

SAFETY-ENVEL OP.

To all whom it may concern:

Be it known that I, CHARLES WV. SCHLEIER, a citizen of the UnitedStates, residing at \Vellston, in the county of St. Louis and State ofMissouri, have invented new and useful Improvements in Safety-Envelops,of which the following is a specification.

This invention relates to improvements in envelops in general, andrelates particularly to that class known as safety envelops -whichcannot be surreptitiously opened or will be extremely simple in itsconstruction,

strong, durable, effectual in its operation and inexpensive tomanufacture; inasmuch as it can be manufactured easily as an ordinaryenvelop. Y

lViththe above objects in View, and others which will be more apparentas the nature of the invention progresses, the improvements reside inthe novel construction and arrangement of parts hereinafter fully described and claimed.

In the drawings, accompanying this specification, there has beenillustrated a simple and preferred embodiment of my improvement, and inwhich drawings Figure 1 is a view of the blank from which the envelop isconstructed. Fig. 2 is a view illustrating one of the side flaps foldedover and connected with a second side flap of the envelop Fig. 3 isaview illustrating the bottom flap folded over and secured to the sideflaps.

It is to be understood that my improved envelop may be constructed ofany desired material from which an envelop can I be made, and that theenvelop may be made in various sizes best suited for the purpose forwhich the envelop is to be employed.

Referring to the drawings, the numeral 1 designates the front or body ofthe envelop. This body 1 is integrally formed with oppositely arrangedside flaps 2 and 3, a bottom flap 4, and a sealing flap 5. All of thesaid flaps are divided from the body through the Specification ofLetters Patent.

Application filed March 20, 1911.

Patented Feb. 11, 1913. Serial No. 615,523.

medium of the usual fold lines, and the side flapsQ and 3 have boththeir upperand lower edgesarranged parallel with and slightly below thelongitudinal fold lines which separate the bottom flap 4 and the sealingflap 5 from the body. The side flaps 2 and 3 are preferably reduced attheir upper portions and adjacent their extremities, and the said sideflaps are each provided with a longitudinally extending slit or cut awayportion designated by the numeral 6. These cut away portions 6, when theflaps-2 and 3 are folded one over the other and upon the body 1,register and the said slits or openings are adapted for a purpose whichwill presently be set forth. Each of the side flaps 2 and 3 is providedupon its upper edge with an extending locking tongue 7, and each of thesaid tongues have their outer faces gummed, for a purpose which willalso presently be set forth. Une of the side flaps, preferably thatdesignated by the numeral 2, is gummed, so that when the said flap 2 isfolded over the flap 3, both of the flaps will be securely con- 80nected together. The bottom flap 4 comprises preferably a substantiallyV-shaped vextension, the same being provided with a longitudinal slit oropening 8, and the said opening is adapted to register with the openings6 of the side flaps 2 and 3 when the said bottom flap is folded over theside flaps. The bottom flap 4 has almost its entire inner face gummed,so that it may be securely connected to both of the side flaps when thesaid 9 bottom flap is folded upon the side flaps. The sealing flap 5also comprises a member having its opposite edges inclined upwardly andtoward each other from its connection with the body to provide asubstantially V- shaped slot. The sealing flap 5 has its upper portioncentrally provided with an extending tongue 9. The outer or oppositeside edges of the said tongue are adapted to extend within the sealingflap 5. and in order 1 to accomplish this the said sealing flap isslitted as at 10 and 11. The portions of the sealing flap 5 adjacent thesaid slits 10 and 11 provide what may be termed laps 12 and 13, the saidlaps as well as the inner face of the sealing flap 5, adjacent itsinclined edges is provided with a coating of gum, and the said flapdirectly above its fold line and ad jacent its opposite edges is slittedas at '14 and 15. The locking tongue 9 has its outer face gummed, andwhen the side fiaps are folded upon the body 1, and the bottom flap Insealing the envelop the tongues 7 are passed through the slits 14 and 15of the sealing flap 5, and have their gummed faces secured to the outerface of the body portion -1 or are bent rearwardly and connected to theouter face of the sealing and side flaps respectively. Both of thesemethods have been found effectual in rendering the envelop thoroughlyeffectual. The envelop is further provided with a pair of spaced lookingfingers 21, and these locking fingers are adapted to be folded withinthe envelop and have their gummed faces connected with the inner face ofthe body of the envelop.

It is to be understood that the gummed portions of the top or sealingflap includes or covers the portions of the said flap surrounding theslits thereof, and by this arrangement the said flap, when the fingersare turned inwardly of the envelop, the gum connecting the portion ofthe flap having the slits to the side flaps of the envelop prevent theinsertion of a knife or other sharpened instrument through the saidslits.

Having thus described the invention,what I claim is: b

An envelop comprising a body provided with end flaps having overlappingortions formed with registering slots, a longitudinal connecting flapformed with a slot to register with the end flap slots and asealing flaphaving slits located near its end portions and a tongue centrallylocated thereon and adapted to be inserted in the registering en flapand longitudinal flap slots and sealed to the inner face of theinnermost end flap and also provided with flaps located near said tongueand adapted to be sealed to the outermost end flap, said end flaps beingeach provided with lateral tongues located on their upper edge portions,one tongue of each end flap being insertible in the end slot of thesealing flap and adapted to be sealed to the outer side of the end flapsof the envelop and the other tongue of each end flap being adapted to besealed against the inner face of the face Wall of the envelop.

In testimony whereof I affix my signature in presence of two witnesses.

CHAR-LES W. SCHLEIER. Witnesses:

E. EDMONSION, J r., L. E. WALTERS.

